Fix wrong type of lumps.

As the eoh (Enf Of Header) is determined during the on-demand parsing, the add_lump() may wrongly lable a lump as "header" or "body" (as the add_lump() may be used before the parsing reached the EOH).
So, better identify all headers asap, so the add_lump() will properly work all the time. This will not add any overhead, as in 99.9999% of the case, due the functions used in cfg, anyhow you end up parsing the whole message.

Fixes  #2144
This is a 100% safe fix, there are 0 chances for side effects.

(cherry picked from commit 23e098f)

parser/msg_parser.c

@@ -727,7 +727,7 @@ int parse_msg(char* buf, unsigned int len, struct sip_msg* msg)
 				ZSW(fl->u.request.uri.s));
 			LM_DBG(" version: <%.*s>\n",fl->u.request.version.len,
 				ZSW(fl->u.request.version.s));
-			flags=HDR_VIA_F;
+			flags=HDR_EOH_F;
 			break;
 		case SIP_REPLY:
 			LM_DBG("SIP Reply  (status):\n");
@@ -737,7 +737,7 @@ int parse_msg(char* buf, unsigned int len, struct sip_msg* msg)
 					ZSW(fl->u.reply.status.s));
 			LM_DBG(" reason:  <%.*s>\n", fl->u.reply.reason.len,
 					ZSW(fl->u.reply.reason.s));
-			flags=HDR_VIA_F;
+			flags=HDR_EOH_F;
 			break;
 		default:
 			LM_DBG("unknown type %d\n",fl->type);